Craig Martell on wed 20 dec 00
OK Karen:
Orange Shino cone 10R
nepheline syenite 24.17
north fork stone 9.67
fusion frit 493 14.5
alumina oxide 19.17
silica 32.5
K2O 0.213 Al2O3 1.709 SiO2 6.173 Si/Al ratio 3.611/1
Na2O 0.372 P2O5 0.001 TiO2 0.009
CaO 0.043 B2O3 0.170
MgO 0.037
Li2O 0.334
Red Shino cone 10R
nepheline syenite 29.69
north fork stone 11.88
fusion frit 493 17.81
alumina oxide 30.21
silica 10.42
K2O 0.213 Al2O3 2.042 SiO2 3.70 Si/Al ratio 1.812/1
Na2O 0.372 P2O5 0.001 TiO2 0.009
CaO 0.043 B2O3 0.170
MgO 0.037
Li2O 0.334
Otay, there they be. Like I mentioned in the last post, you guys don't
have any north fork stone, well I think maybe June Perry has some but don't
bug her. You can sub another iron bearing slip clay such as Jasper,
albany, or redart. These shinos are a bit more fused at cone 10 than you
would think and they may even go as low as cone 8. I've never taken them
lower than 10 though.
If any of you try these glazes lemme know how they do.
later, Craig Martell in Oregon
Karen Sullivan on wed 20 dec 00
I would love the other shinos...
I was waiting patiently...but...but....but???
Oh, please...
thanks,
bamboo karen
on 12/20/00 10:37 AM, Craig Martell at ashglaze@TELEPORT.COM wrote:
> Hi:
>
> I said I would post the other shinos that I've been working with but there
> doesn't seem to be much interest. Probably because mel is getting all of
> you worked up about blue glazes! :>)
>
> I'll give you the flux ratios though in case anyone wants to try some of
> these glazes. Once again, I used Ian Currie's grid method to blend in
> alumina oxide and silica. I didn't use clay, which contributes both
> alumina and silica to a glaze. I wanted to isolate the effects of alumina
> and silica, which is of great importance with shinos. Well, to me anyway.
>
> Shino Set #3 flux corner "C"
>
> nepheline syenite 50.0
> North Fork Stone 20.0
> Fusion Frit 493 30.0
>
> This ratio of fluxes will melt very well at cone 6. Maybe below that. I
> fired the set to cone 10R. Instead of the North Fork Stone, you could add
> another iron bearing slip clay or Redart. Then blend in Kaolin and or ball
> clay, or alumina oxide. You can also add mixtures of alumina and silica
> keeping the ratio at 4 silica to 1 alumina or slightly lower.
>
> Fusion Frit 493 contains KNO, Li2O, and some B2O3 in terms of fluxes. We
> really don't see boron in shino glazes but my findings are that it doesn't
> change the character much if the boron isn't too high and it aids in
> fusion. The seger equivalent of boron in this set is: 0.170.
>
> That's it for me. I'm outta here, Craig Martell in Oregon
>
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